Wildcat strike 

Wildcat strike is a strike called by workers without approval of the union leadership. It is particularly effective in key industries and segments of the economy which depend on timeliness: transportation. Communication, education, agriculture. It could also be used to disrupt oppressive governments.

New York City teachers in a Queens high school called a wildcat strike today when it was revealed their administrator sexually harassed several female teachers and was never reprimanded or fired.

Wildcat strike by Radfem May 5, 2018

wildcat strike 

When non-union employees go on strike due to unfair wages and or treatment.

I'm tired of this, let's go on strike! Well we are not union! Then let's go on a wildcat strike.

wildcat strike by The old mister January 28, 2016